If you have to do with some a bit old Idrac and you have instead a newer browser and java virtual machine is very likely that you run into this error trying to open the server console: “Error when reading from SSL socket connections”
The problem is due to the fact that the latest versions of java disable by default the insecure protocols for SSL communication and encryption. Fortunately there is a way to re-enable them (even temporarily) and then be able to log into the console without having to reinstall other versions of java.
What you need to do is to edit the file java.security that you cna find in the path C:\Program Files\Java\jre1.8.0_71\lib\security and comment the two lines (you just put a # at the beginning of the line):
jdk.certpath.disabledAlgorithms=MD2, MD5, RSA keySize < 1024
jdk.tls.disabledAlgorithms=SSLv3, RC4, MD5withRSA, DH keySize < 768
Also check if you are using the 32 or 64 bits version of java because obviously the path of the java.security file changes accordingly: C:\Program Files (x86)\Java\jre1.8.0_71\lib\security
Save the file and try again to open the console!